Sink



FIG. 1 is a perspective view from above and to the right of the sinkembodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left sideelevational view being a mirror image thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

The broken line portions depicting the drain and overflow portions arefor illustrative purposes only and form no part of the claimed design.

The ornamental design for a sink, as shown and described.